Roller quartz mill



(No Model.) 2 Sheets-Sheet 1.

0. 0. LANE. ROLLER QUARTZ MILL.

No. 456,623. Patented July 28, 1891 cdaaw WITNESSES [/V YEA 10$ Q Z g,lm

UNITED STATES PATENT OFFICE.

CHARLES C. LANE, OF SAN DIEGO, CALIFORNIA, ASSIGNOR TO HUGHES & 00., OFSAME PLACE.

RQLLER QUARTZ-MILL.

EPECIPICATION forming part of Letters Patent No. 456,623, dated July 28,1891.

Application filed June 4, 1890. Serial No. 354,231. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES 0. LANE, a citizen of the United States,residing at San Diego, in the county of San Diego and State ofCalifornia, have invented an Improvement in Roller Quartz-Mills, ofwhich the following is a specification.

My invention consists in a new and improved roller quartz-mill forcrushing and .pulverizing ores, which will be hereinafter fullydescribed and claimed.

Referring to the accompanying drawings, Figure 1 isa side View of my newand improved roller quartz-mill. Fig. 2 is a top plan view of the mill.Fig. is a central vertical sectional view of the same 5 and Fig. 4 is atransverse sectional view, on an enlarged scale, of the circular troughand the ore-guards.

The same letters of reference indicate cor responding parts in all thefigures.

Referring to the several parts by letter, A indicates the platform ofthe mill, upon which is constructed a tank or receptacle B, which isloaded with rocks, water, or any othersuit able weight. To theplatform-timbers A are secured the pairs of hangers C C, in which aremounted the axles D of the roller-crushers E. The inner hanger G has auniversal or pivot joint G which allows the axles to play sutlicientlyas the wheels travel around in the circular trough, the openings in theouter hangers C being suflicientl y large to permit of this slightmovement. On the outer ends of the radial axles D are secured the wheelsor roller crushers E, the hubs of which extend into the outerbearing-box, as shown. These rollers travel in a circular trough F,which is U-shaped in cross-section and which is supported upon bottomtimbers I, which in turn rest upon the foundation-timbers J. In thebottom of the U-shaped trough are fitted the removable shoes K of hardermetal,which may beremoved when worn and replaced by new ones.

Around the circumference or outer edge of the circular platform A issecured the endless circle or series of cogs or teeth L, with which acog-wheel M on the upper end of a vertical shaft N meshes. On the lowerend of this shaft is a bevel-pinion O, meshing with a similar pinion Pon the drive-shaft Q, which may be driven by any suitable power.

I do not confine myself to placing the circle of cogs around the edge ofthe platform, as here shown, as lD may be placed beneath the platform,near the edge thereof, with the same results.

Upon the center of the middle timber I is bolted a fulcrum-block R,having a vertical socket or bore R, in which fits the lower end of apivot S, which is bolted at its upper end to the center of the platform.The lower end of this pivot S does not reach down to the bottom of thehole B, so that while it serves as a pivotal guide for the revolvingplatform, holding it always on the same center, all the weight of theloaded platform is thrown as it is revolved upon the crushing-rollers E.This is the object of the weight placed upon the loaded platform-to givegreat power to the crushing-rollers.

The upper edges of the U-shaped trough F are formed with the annulargrooves F in which [it the lower edges of the ore-guards T T, which keepthe ore in 'place while it is being crushed in the trough Fand which canbe removed when not required.

The mill is provided with an inclined outlet or chute \V, upon whichmaybe placed suitably-constructed plates for catching or retaining thegold or silver.

From the foregoing description, taken in connection with the accomiianying drawings, itwill be seen that my roller quartz-mill is simple,inexpensive, and durable in its construction and exceedingly powerfuland effective in its operation. The immense weight of the great load ofrocks in the receptacle on the revolving platform gives very greatcrushing-power to the wheels, the entire weight of this load beingthrown directly on the crushing-wheels E by my peculiar construction.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. The combination of the circular trough, the loaded platform havingthe outer hangers 0, formed each with a bore of greater diameter thanthe revolving axle which passes running in the circular trough, thefulcrum; block R, formed with the vertical bore, and the guidepivot S,secured centrally to the loaded platform and projecting into thevertical bore R, but terminating above the bottom of the same,substantially as set forth.

In Witness whereof I have hereunto set my hand and seal.

CHARLES C. LANE.

Witnesses:

A. B. SMITH, I P. J. WALLACE.

